Active shooter situation in Maine, — city residents told to 'stay inside with doors locked'

A shelter-in-place order has been issued in a Maine city by state police, siting an active shooting situation.

Maine State Police said, in a Facebook post, that there is an active shooting situation in Lewiston, a city of 36,000, 35 miles north of Portland.

Authorities told residents in Lewiston to "shelter in place" and to "stay inside your home with the doors locked."

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Police said that local law enforcement and state police are investigating "two locations right now."

It is unclear whether people have been injured.